kushanjanith

Thanks a lot for your time and explanation. Since I don't have any type of power bank, guess I'll be going with the Powerlogy option since its PD output seems similar to the Anker's.

OK, I did a whole bunch of research for you and found that the X-S10 uses about 1.1 amps (1100ma) while recording 4K video.
When the camera is off, the power bank will charge the battery. However, this is not like a GoPro that can run directly off a power bank. The camera will indeed use some (not all) power from the external USB power supply (power bank in this case) to help run the camera, but only while the battery is inside. This way, you can even use a low-power USB 2.0 port (500ma) as external auxiliary power, because the battery has enough reserve to run the camera by itself. So the extra power from the USB port is basically used to slow the battery discharge.
What this means is that you can use any USB power bank whatsoever to help power the camera, as long as you start with a fully-charged battery in the camera. The larger the capacity of the power bank, the longer the camera should run. If you turn the camera off between takes, the camera battery will be recharged by the power bank, and that will give you the most shooting time.
I measured the current drawn from the USB port (again while recording 4K video) and it went no higher than 860ma, which means that some power is always being taken from the camera battery.